Improve test coverage reporting / accuracy (#7819)

* improve test coverage reporting / accuracy

* handle absolute coverpaths

* move tests into multiple files

* rename codecov.yml (https://github.com/codecov/support/issues/426)

cmd/platform/channel_test.go

@@ -0,0 +1,89 @@
+// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package main
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/mattermost/mattermost-server/api"
+	"github.com/mattermost/mattermost-server/model"
+	"github.com/stretchr/testify/require"
+)
+
+func TestJoinChannel(t *testing.T) {
+	th := api.Setup().InitBasic()
+	defer th.TearDown()
+
+	channel := th.CreateChannel(th.BasicClient, th.BasicTeam)
+
+	checkCommand(t, "channel", "add", th.BasicTeam.Name+":"+channel.Name, th.BasicUser2.Email)
+
+	// Joining twice should succeed
+	checkCommand(t, "channel", "add", th.BasicTeam.Name+":"+channel.Name, th.BasicUser2.Email)
+
+	// should fail because channel does not exist
+	require.Error(t, runCommand(t, "channel", "add", th.BasicTeam.Name+":"+channel.Name+"asdf", th.BasicUser2.Email))
+}
+
+func TestRemoveChannel(t *testing.T) {
+	th := api.Setup().InitBasic()
+	defer th.TearDown()
+
+	channel := th.CreateChannel(th.BasicClient, th.BasicTeam)
+
+	checkCommand(t, "channel", "add", th.BasicTeam.Name+":"+channel.Name, th.BasicUser2.Email)
+
+	// should fail because channel does not exist
+	require.Error(t, runCommand(t, "channel", "remove", th.BasicTeam.Name+":doesnotexist", th.BasicUser2.Email))
+
+	checkCommand(t, "channel", "remove", th.BasicTeam.Name+":"+channel.Name, th.BasicUser2.Email)
+
+	// Leaving twice should succeed
+	checkCommand(t, "channel", "remove", th.BasicTeam.Name+":"+channel.Name, th.BasicUser2.Email)
+}
+
+func TestListChannels(t *testing.T) {
+	th := api.Setup().InitBasic()
+	defer th.TearDown()
+
+	channel := th.CreateChannel(th.BasicClient, th.BasicTeam)
+	th.BasicClient.Must(th.BasicClient.DeleteChannel(channel.Id))
+
+	output := checkCommand(t, "channel", "list", th.BasicTeam.Name)
+
+	if !strings.Contains(string(output), "town-square") {
+		t.Fatal("should have channels")
+	}
+
+	if !strings.Contains(string(output), channel.Name+" (archived)") {
+		t.Fatal("should have archived channel")
+	}
+}
+
+func TestRestoreChannel(t *testing.T) {
+	th := api.Setup().InitBasic()
+	defer th.TearDown()
+
+	channel := th.CreateChannel(th.BasicClient, th.BasicTeam)
+	th.BasicClient.Must(th.BasicClient.DeleteChannel(channel.Id))
+
+	checkCommand(t, "channel", "restore", th.BasicTeam.Name+":"+channel.Name)
+
+	// restoring twice should succeed
+	checkCommand(t, "channel", "restore", th.BasicTeam.Name+":"+channel.Name)
+}
+
+func TestCreateChannel(t *testing.T) {
+	th := api.Setup().InitBasic()
+	defer th.TearDown()
+
+	id := model.NewId()
+	name := "name" + id
+
+	checkCommand(t, "channel", "create", "--display_name", name, "--team", th.BasicTeam.Name, "--name", name)
+
+	name = name + "-private"
+	checkCommand(t, "channel", "create", "--display_name", name, "--team", th.BasicTeam.Name, "--private", "--name", name)
+}